diff --git a/.github/workflows/cache.yml b/.github/workflows/cache.yml
index 77e8be2a..75d18d43 100644
--- a/.github/workflows/cache.yml
+++ b/.github/workflows/cache.yml
@@ -27,7 +27,7 @@ jobs:
     needs: deploy-runner
     runs-on: [self-hosted, cml-gpu]
     container:
-      image: docker://mmcky/quantecon-lecture-python:cuda-12.1.0-anaconda-2023-03-py310-d
+      image: docker://mmcky/quantecon-lecture-python:cuda-12.1.0-anaconda-2023-09-py311
       options: --gpus all
     steps:
       - uses: actions/checkout@v3
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8dba38d8..c128c304 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,7 +24,7 @@ jobs:
     needs: deploy-runner
     runs-on: [self-hosted, cml-gpu]
     container:
-      image: docker://mmcky/quantecon-lecture-python:cuda-12.1.0-anaconda-2023-03-py310-d
+      image: docker://mmcky/quantecon-lecture-python:cuda-12.1.0-anaconda-2023-09-py311
       options: --gpus all
     steps:
       - uses: actions/checkout@v3
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 0a39db7f..e5ff9b81 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -28,7 +28,7 @@ jobs:
     needs: deploy-runner
     runs-on: [self-hosted, cml-gpu]
     container:
-      image: docker://mmcky/quantecon-lecture-python:cuda-12.1.0-anaconda-2023-03-py310-d
+      image: docker://mmcky/quantecon-lecture-python:cuda-12.1.0-anaconda-2023-09-py311
       options: --gpus all
     steps:
       - name: Checkout
diff --git a/environment.yml b/environment.yml
index 762f681c..d3a2c680 100644
--- a/environment.yml
+++ b/environment.yml
@@ -2,12 +2,13 @@ name: lecture-jax
 channels:
   - default
 dependencies:
-  - python=3.10
-  - anaconda=2022.10
+  - python=3.11
+  - anaconda=2023.09
   - pip
   - pip:
     - jupyter-book==0.15.1
-    - quantecon-book-theme==0.5.3
+    - docutils==0.17.1
+    - quantecon-book-theme==0.6.0
     - sphinx-tojupyter==0.3.0
     - sphinxext-rediraffe==0.2.7
     - sphinx-exercise==0.4.1